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NC 10-26-1984 Casting Centrifugal Cast Grey Iron Pipes for Pressure Quality Specifications《铸造 离心生灰铁管压力 质量规格》.pdf 14

NC 10-26-1984 Casting Centrifugal Cast Grey Iron Pipes for Pressure Quality Specifications《铸造 离心生灰铁管压力 质量规格》.pdfNC 10-26-1984 Casting Centrifugal Cast Grey Iron Pipes for Pressure Quality Specifications《铸造 离心生灰铁管压力 质量规格》.pdf

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NC 10-15-1987 Metalargy and Metallography Foundry Scraos and Wastes General Quality Specifications《金属组织学和冶金学铸造废片和废物 一般质量规格》.pdf 7

NC 10-15-1987 Metalargy and Metallography Foundry Scraos and Wastes General Quality Specifications《金属组织学和冶金学铸造废片和废物 一般质量规格》.pdfNC 10-15-1987 Metalargy and Metallography Foundry Scraos and Wastes General Quality Specifications《金属组织学和冶金学铸造废片和废物 一般质量规格》.pdf

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NC 10-14-1987 Metallurgy and Metallography Bronze and Bronze Alloys Scraos and Wastes General Quality Specifications《金属组织学和冶金学黄铜和黄铜合金废片和废物 一般质量规格》.pdf 10

NC 10-14-1987 Metallurgy and Metallography Bronze and Bronze Alloys Scraos and Wastes General Quality Specifications《金属组织学和冶金学黄铜和黄铜合金废片和废物 一般质量规格》.pdfNC 10-14-1987 Metallurgy and Metallography Bronze and Bronze Alloys Scraos and Wastes General Quality Specifications《金属组织学和冶金学黄铜和黄铜合金废片和废物 一般质量规格》.pdf

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NC 06-24-1968 Taper keys and keyways《锥形键和键沟》.pdf 2

NC 06-24-1968 Taper keys and keyways《锥形键和键沟》.pdfNC 06-24-1968 Taper keys and keyways《锥形键和键沟》.pdf

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NC 06-23-1968 Rounded-off sunk keys Screwed fixing《圆形嵌入键》.pdf 3

NC 06-23-1968 Rounded-off sunk keys Screwed fixing《圆形嵌入键》.pdfNC 06-23-1968 Rounded-off sunk keys Screwed fixing《圆形嵌入键》.pdf

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NC 06-22-1968 Rounded-off sunk keys《圆形嵌入键》.pdf 3

NC 06-22-1968 Rounded-off sunk keys《圆形嵌入键》.pdfNC 06-22-1968 Rounded-off sunk keys《圆形嵌入键》.pdf

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NC 06-21-1968 Sunk keys and keyways《嵌入键和键沟》.pdf 2

NC 06-21-1968 Sunk keys and keyways《嵌入键和键沟》.pdfNC 06-21-1968 Sunk keys and keyways《嵌入键和键沟》.pdf

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NC 06-20-1968 Sunk keys diameters《埋头键直径》.pdf 2

NC 06-20-1968 Sunk keys diameters《埋头键直径》.pdfNC 06-20-1968 Sunk keys diameters《埋头键直径》.pdf

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NBN-ISO 845-1990 7500 Cellular plastics and rubbers - Determination of apparent (bulk) density《泡沫橡胶和塑料 表观密度的测定》.pdf 4

NBN-ISO 845-1990 7500 Cellular plastics and rubbers - Determination of apparent (bulk) density《泡沫橡胶和塑料 表观密度的测定》.pdfNBN-ISO 845-1990 7500 Cellular plastics and rubbers - Determination of apparent (bulk) density《泡沫橡胶和塑料 表观密度的测定》.pdf

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NBN-ISO 8421-8-1992 0625 Fire protection Vocabulary Part 8 Terms specific to fire-fighting rescue services and handling hazardous materials《火灾防护措施 词汇 第8部分：消防 营救设施和使用危险器材的专用术语》.pdf 2

NBN-ISO 8421-8-1992 0625 Fire protection Vocabulary Part 8 Terms specific to fire-fighting rescue services and handling hazardous materials《火灾防护措施 词汇 第8部分：消防 营救设施和使用危险器材的专用术语》.pdfNBN-ISO 8421-8-1992 0625 Fire protection Vocabulary Part 8 Terms specific to fire-fighting rescue services and handling hazardous materials《火灾防护措施 词汇 第8部分：消防 营救设施和使用危险器材的专用术语》.pdf

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